Have all the ports been upgraded to 3.0 or are you still false advertising it as 3.0 when only one of the ports actually 3.0 and the rest 2.0?

No. Only the first port (near blue LED) is detected as 3.0,the remaining ports show as 2.0. I don’t like being tricked.

The length of the cable is about 10 inches long. I just got mine today (7/27/23) and measured it. It is longer than what most people realize. The USB hub itself is about 4 inches long.

can you plug mutiple microphones into it?

The unit has four USB connections. If your microphones have USB plugs, then they can be connected. BUT... Will they work they way you want them to? Who knows, as you don't state what you're trying to do... Just know that you can order the unit, try it out... If it works, great. If not, you can return for free and refund of cost.... Easy enough to try...

Data Transfer Rate	5 Gigabits Per Second
Number of Ports	4
Operating System	Windows, Mac OS X and Linux systems
Compatible Devices	Laptops,USB Flash Drive,Camera,Gaming Consoles,Keyboards,Mouse,Printers,Card Reader,Hard Disk Drive,Monitors,Desktops,USB Fan
Total Usb Ports	4
Hardware Connectivity	USB, USB 3.0
Additional Features	Indicator Light, Lightweight, Fast Data Transfer, Plug and Play
Item Weight	1.5 Ounces
Item Dimensions L x W x H	3.94"L x 1.18"W x 0.39"H
Material Type	Plastic
Color	USB Port/Black

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